MIC23051-16YML-TR

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MIC23051-16YML-TR DC DC Switching Regulators Application Field and Working Principle

The MIC23051-16YML-TR DC-DC switching regulator is a high-frequency current-mode DC-DC switching regulator specifically designed to meet the needs of portable low-power applications. This DC-DC switching regulator family includes one P-channel MOSFET and one N-channel MOSFET which can provide up to 200mA output current and can be used in low-power applications such as LED drivers, battery-powered applications, and more.

Application

The MIC23051-16YML-TR DC-DC switching regulator is designed for low power applications such as LED drivers, battery powered applications, and portable devices. It is suitable for applications requiring a wide input voltage range, low quiescent current, and superior dynamic control. The regulator features an input voltage range from 3.5V to 14V and is capable of delivering up to 200mA of output current. It is designed with a programmable switching frequency of up to 1MHz and has built-in protection features to help prevent damage caused by overcurrent, undervoltage, overtemperature, and more.

Working Principle

The MIC23051-16YML-TR DC-DC switching regulator is a current-mode switching regulator. Current-mode switching is a form of regulated DC-DC conversion that utilizes a linear regulator and a constant-current emitter follower. In operation, the linear regulator senses the output voltage of the switching regulator and produces a control voltage that is proportional to the output voltage. This control voltage is then used to control the conduction of the switching transistor, allowing it to remain in the on state long enough to ensure that the output voltage remains stable. This type of circuit is designed to have a fast response time, allowing it to make quick changes to the output voltage in response to sudden changes in the input voltage.

The switching transistor used in a current-mode switching regulator is an N-channel MOSFET which is enabled by an input voltage. When the input voltage rises above the set threshold voltage, the transistor turns on, closing the switching circuit and allowing the output voltage to rise. When the input voltage drops below the threshold voltage, the transistor turns off and the output voltage drops.

The MIC23051-16YML-TR DC-DC switching regulator also includes a P-channel MOSFET switch which helps protect the system from inrush currents and overcurrent conditions. Inrush current protection helps prevent damage to the system caused by sudden changes in the input voltage. Over current protection is used to prevent excessive current draw, and to shut down the system if the current draw exceeds a pre-set threshold. The MOSFET enables delayed turn-on and turn-off times which helps reduce switching transients and improves system reliability.

The MIC23051-16YML-TR DC-DC switching regulator also features an integrated protection circuit, which is responsible for protecting the system from undervoltage, overtemperature, and overcurrent. The protection circuit monitors the input and output voltages, as well as the output current and temperature, and shuts down the system when the set values are exceeded in order to prevent any damage.

The MIC23051-16YML-TR DC-DC switching regulator is a versatile and efficient solution for use in low power applications. The regulator is capable of delivering up to 200mA output current, and features a wide input voltage range, low quiescent current, and fast response time. With its integrated protection circuit, the regulator is able to protect itself from damage caused by overcurrent, overtemperature, and undervoltage conditions, ensuring reliable operation.

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